501 prompts matching "Quiz: Newton's second law and the equation F = ma"
Let me explain: Self and mutual inductance
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Worked example: Turns ratio and output voltage of a transformer
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Spot my mistake: A transformer calculation with the ratio inverted
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Worked example: Choosing a core material from hysteresis data
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Real-life Nigeria: Neon signs and fluorescent tubes
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Spot my mistake: Assuming light bends round the fibre rather than reflecting
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Real-life Nigeria: Lasers in surgery, printing and barcode scanning
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Physics at work: Laser and photonics work
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Let me explain: Checking an equation for dimensional consistency
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Physics at work: Engineering calculation and quality control
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Spot my mistake: The claim that a rocket pushes against the air
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Real-life Nigeria: Nigeria's satellite launches and space agency work
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Worked example: Calculating the flux density at a point near a long straight wire
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Worked example: Calculating the force on a conductor placed at an angle to a field
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Real-life Nigeria: The electric motor as an application of the motor effect
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Let me explain: Why a.c. is described by an r.m.s. rather than an average value
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Worked example: The energy of a photon emitted in a stated transition
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Worked example: The de Broglie wavelength of an electron at a stated speed
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Let me explain: Why a geostationary orbit sits above the equator
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Worked example: The period of a satellite at a stated orbital radius
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